LTC3214EDD 查看數據表（PDF） - Linear Technology

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LTC3214EDD

500mA Camera LED Charge Pump

Linear Technology 

LTC3214

ABSOLUTE MAXIMUM RATINGS

(Note 1)

VIN to GND ............................................... –0.3V to 5.5V

CPO to GND ............................................. –0.3V to 5.5V

EN ................................................... –0.3V to VIN + 0.3V

ICPO, IILED (Note 2)...............................................600mA

CPO Short-Circuit Duration............................. Indefinite

Storage Temperature Range.................. –65°C to 125°C

Operating Temperature Range (Note 3)... –40°C to 85°C

PIN CONFIGURATION

TOP VIEW

C2+ 1

C1+ 2

CPO 3

ILED 4

ISET 5

10 C1–

9 GND

11

8 C2–

7 VIN

6 EN

DD PACKAGE

10-LEAD (3mm s 3mm) PLASTIC DFN

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

LTC3214EDD#PBF

LTC3214EDD#TRPBF

LBVQ

10-Lead (3mm × 3mm) Plastic DFN

Consult LTC Marketing for parts specified with wider operating temperature ranges.

Consult LTC Marketing for information on non-standard lead based finish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

TEMPERATURE RANGE

–40°C to 85°C

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, CIN = C1 = C2 = 2.2μF, CCPO = 4.7μF.

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

Input Power Supply

VIN Operating Voltage

IVIN Operating Current

IVIN Shutdown Current

LED Current

ICPO = 0mA, 1x Mode

ICPO = 0mA, 1.5x

ICPO = 0mA, 2x Mode

EN = LOW

l 2.9

4.5

V

980

μA

4.8

mA

6.7

mA

2.5

7.5

μA

LED Current Ratio (ILED/ISET)

ILED Dropout Voltage (VILED)

Mode Switching Delay (LED Warm-Up Time)

ILED = 150mA to 500mA

Mode Switch Threshold, ILED = 200mA

2715 2950 3190 mA/mA

40

mV

2.5

ms

LED Current On Time

EN to LED Current On

100

μs

Charge Pump (CPO)

Charge Pump Output Clamp Voltage

5

V

1x Mode Output Impedance

0.70

Ω

1.5x Mode Output Impedance

3.2

Ω

2x Mode Output Impedance

3.5

Ω

CLK Frequency

CPO Short-Circuit Detection

VIN = 3V

l 0.6

0.9

1.2

MHz

Threshold Voltage

EN = High

l 0.5

1.5

V

Test Current

EN = Low, VCPO = 0V

l 12

66

mA

3214fb

2

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